#pragma once
#include<iostream>
#include<unistd.h>
#include<sys/types.h>
#include<sys/socket.h>
#include<netinet/in.h>
#include<arpa/inet.h>
#include"Log.hpp"
#include"InetAddr.hpp"
#include<sys/wait.h>
#include<pthread.h>
#include<functional>

using namespace log_ns;
using namespace std;
const static int gport = 8888;
const static int gsockfd = -1;
const static int gblcklog=8;

enum
{
    SOCKET_ERROR = 1,
    BIND_ERROR,
    LISTEN_ERR
};

using command_service_t = function<void(int sockfd,InetAddr addr)>;

class TcpServer
{
public:
    TcpServer(command_service_t service,uint16_t port = gport):_port(port),_listensockfd(gsockfd),_isrunning(false),_service(service)
    {
        
    }
    void InitServer()//初始化
    {
         //1.创建套接字
        _listensockfd = socket(AF_INET,SOCK_STREAM,0);//SOCK_STREAM和udp的不一样
        if(_listensockfd<0)
        {
            LOG(FATAL,"socket create failed\n");
            exit(SOCKET_ERROR);
        }
        LOG(INFO,"sockfd create success,SOCKFD:%d\n",_listensockfd);//一定是3

        struct sockaddr_in local;
        memset(&local,0,sizeof(local));
        local.sin_family = AF_INET;
        local.sin_port=htons(_port);
        local.sin_addr.s_addr = INADDR_ANY;

        //2.进行绑定
        if(bind(_listensockfd,(struct sockaddr*)&local,sizeof(local))<0)
        {
            LOG(FATAL,"bind error\n");
            exit(BIND_ERROR);
        }
        LOG(INFO,"bind success\n");
        //3.tcp是面向连接的，所以tcp需要不断地做到获取连接   随时等待新客户到来进行连接
        if(listen(_listensockfd,gblcklog)<0)
        {
            LOG(FATAL,"listen error\n");
            exit(LISTEN_ERR);
        }
        LOG(INFO,"listen success\n");
    }
    class ThreadData
    {
public:
        int _sockfd;
        TcpServer* _self;
        InetAddr _addr;
public:
        ThreadData(int sockfd,TcpServer* self,InetAddr &addr):_sockfd(sockfd),_self(self),_addr(addr)
        {

        }
    };
    void Loop()//启动循环
    {
        _isrunning=true;
        while(_isrunning)
        {
            struct sockaddr_in client;
            socklen_t len = sizeof(client);
            //4.获取新连接    _sockfd是获取新连接的一般称为监听套接字，accept的返回值是提供服务的套接字，叫做io套接字
            int sockfd = accept(_listensockfd,(struct sockaddr*)&client,&len);
            if(sockfd<0)
            {
                LOG(WARNING,"accept error\n");
                continue;
                
            }
            InetAddr addr(client);
            LOG(INFO,"get a new link,client info: %s\n",addr.AddrStr().c_str());


            //多线程版本-----不能关闭fd，因为文件描述表都是共享的
            pthread_t tid;
            ThreadData *td = new ThreadData(sockfd, this, addr);
            pthread_create(&tid,nullptr,Execute,td);//新线程分离

        }
        _isrunning = false;
    }
    static void* Execute(void * args)
    {
        pthread_detach(pthread_self());
        ThreadData *td = static_cast<ThreadData *>(args);
        td->_self->_service(td->_sockfd,td->_addr);
        ::close(td->_sockfd);
        delete td;
        return nullptr;
    }

    // void Service(int sockfd,InetAddr addr)
    // {
    //     //长服务
    //     while(true)
    //     {
    //         char inbuffer[1024];
    //         size_t n = read(sockfd,inbuffer,sizeof(inbuffer)-1);//收到消息
    //         if(n>0)
    //         {
    //             inbuffer[n] = 0;
    //             LOG(INFO, "get message from client %s, message: %s\n", addr.AddrStr().c_str(), inbuffer);

    //             string echo_string="[server echo]#";
    //             echo_string+=inbuffer;
    //             write(sockfd,echo_string.c_str(),echo_string.size());//发送消息
    //         }
    //         else if (n == 0)
    //         {
    //             LOG(INFO, "client %s quit\n", addr.AddrStr().c_str());
    //             break;
    //         }
    //         else
    //         {
    //             LOG(ERROR, "read error: %s\n", addr.AddrStr().c_str());
    //             break;
    //         }
    //     }
    //     ::close(sockfd);
    // }
    ~TcpServer()
    {

    }
private:
    uint16_t _port;
    int _listensockfd;//获取新连接的
    bool _isrunning;
    command_service_t _service;
};